With its faster visual display, adjustable two to six Digital Signal Filtration, additional search
modes, variable sweep speed and single or dual-frequency operation; all coupled with Whites
impressive display and abundant user-selectable menu options, the new DFX is definitely
most impressive.
White's Mxt
By Andy Sabisch
Whites Electronics has been a leading manufacturer in the metal detecting industry for more
than 55 years and over that time, has developed the reputation of a company producing
quality detectors making impressive finds around the world. Recently theyve introduced
several new models, and I was looking forward to giving the MXT a try when I was told one
was enroute.
Features
The MXT is a departure from some of the standard design specifications found in other
Whites detectors. While it does not appear much different from the outside, the electronics
make the MXT a totally new detector. The engineers opted not to use the typical 6.592 kHz
operating frequency found on most Whites units over the past 20-plus years and selected 14
kHz based on its increased sensitivity to low conductive targets. A point current Whites users
should be aware of with this change is that coils from other Whites detectors cant be used on
the MXT - there are 2 optional Double-D coils designed specifically for the MXT.
The MXT is controlled by three knobs and two toggle switches on the housing and a three-
position trigger on the handgrip. The internal software has been pre-programmed to provide
three distinctly different settings for three different types of treasure huntingcoin and jewelry,
relics and prospecting. Selecting the desired type of hunting is as simple as moving a toggle
switch to appropriate setting. The remaining toggle switch controls the ground balance
circuitry and has three positions, ground, lock and salt. In ground, the MXT will automatically
track and compensate for changes in ground mineralization. If mineralization changes rapidly,
more stable operation will be achieved in lock which fixes the ground balance. Salt is
optimized for saltwater beaches or alkali ground often found prospecting for gold. The knobs
are labeled gain (sensitivity), dual control (either discrimination or SAT depending on search
mode) and threshold.
The LCD meter display provides a wealth of digital information and what is displayed
changes depending on what search mode has been selected. In all three modes, a unique VDI
(visual discrimination indication) number will be displayed that can be used to accurately
identify targets before recovery. In the Coin and Jewelry and Relic modes, in addition to the
VDI number a target ID label is displayed. These labels are tied to the displayed VDI number
and were selected to match U.S. coinage, common trash, some jewelry and Civil War relics.
The relic mode has only four possible target ID labels (iron, button, bullet or buckle);
however, most avid relic hunters will tend to focus on the VDI number rather than the label
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